ORDER OF MAGNITUDE OF RADIATION FROM TURBULENT FLOW AND TURBULENCE EXCITED STRUCTURAL VIBRATION.

Abstract

Expressions are derived for the cross spectral density of the far field pressure resulting from the vibration of an elastic surface excited by turbulence and from a rigid surface over which there is turbulent flow. The plate problem is worked out in detail and it is shown that for frequencies of the order of the resonance of the lowest plate modes the radiati4n is due primarily to elastic vibration, whereas at high frequencies corresponding to higher resonant modes in the plate the turbulent flow alone can b responsible for part of the radiation. The basic formulas are also derived for the cylinder. (Author)

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1965
Accession Number
AD0634036

Entities

People

  • Joshua E. Greenspon

Tags

DTIC Thesaurus Topics

  • Far Field
  • Flow
  • Frequency
  • Frequency Shift
  • Radiation
  • Resonance
  • Turbulence
  • Turbulent Flow
  • Vibration

Fields of Study

  • Engineering
  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Fluid Mechanics and Fluid Dynamics.
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.